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SSC JE ELECTRICAL
ssc MCQs with answers - Part 4
1. In parallel combination of resistances, the voltage is ?
lower across largest resistance
higher across largest resistance
same across each resistance
higher across smaller resistance
Answer: same across each resistance
Explanation:
In parallel combination of resistances, the voltage is same across each resistance.
2. What will be the color-coding of a resistor when the resistance of the resistor is 15 Ohms ?
Green-Brown-Black-Black
Brown-Green-Brown-Brown
Brown-Green-Black-Brown
Brown-Green-Black-Black
Answer: Brown-Green-Black-Black
Explanation:
The color-coding of a resistor when the resistance of the resistor is 15 Ohms Brown-Green-Black-Black.
3. Which one of the following statement is TRUE about the Kirchhoff's voltage law ?
The algebraic sum of all the voltages around any closed path is infinite.
The algebraic sum of all the voltages around any closed path is negative.
The algebraic sum of all the voltages around any closed path is one.
The algebraic sum of all the voltages around any closed path is zero.
Answer: The algebraic sum of all the voltages around any closed path is zero.
Explanation:
the Kirchhoff's voltage law The algebraic sum of all the voltages around any closed path is zero.
4. Which one of the following is the CORRECT statement for superposition theorem ?
The algebraic sum of all the voltages around any closed path is zero.
The overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.
The sum of currents entering a node is equal to the sum of currents leaving the node.
The algebraic sum of all the voltages around any closed path is equal to one.
Answer: The overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.
Explanation:
Superposition theorem State that the overall current in any part of a linear circuit is equal to the algebraic sum of the currents produced by each source separately.
5. Which one of the expression satisfies the condition of maximum power transfer theorem ?
ZL=ZS
ZL=RL
ZL=2ZS
XL=RL
Answer: ZL=ZS
Explanation:
the condition of maximum power transfer theorem is ZL=ZS.
6. Determine the value of current (in A) that flows through a resistor of 9 ohms, when the potential difference between the ends of the resistor is 36 V ?
8
7
4
3
Answer: 4
Explanation:
I=V/R, 36/9= 4 Amp
7. What will be the value of load impedance (in ohms) for transmitting maximum power from the source to load when the source impedance is 8 + j4 ohms ?
8 - j4
8 + j4
4 + j8
4 - j8
Answer: 8 - j4
Explanation:
The value of load impedance (in ohms) for transmitting maximum power from the source to load when the source impedance is 8 + j4 ohms is 8 - j4.
8. Determine the load resistance (in ohms) for a circuit when the maximum power transferred from source of 80 V to the load is 80 W ?
40
20
10
5
Answer: 20
Explanation:
The load resistance 20 (in ohms) for a circuit when the maximum power transferred from source of 80 V to the load is 80 W.
9. Which property of a material opposes the passage of magnetic flux through it ?
Permeance
Capacitance
Inductance
Reluctance
Answer: Reluctance
Explanation:
Reluctance property of a material opposes the passage of magnetic flux through it.
10. Determine the intensity of magnetization (in A/m) of a magnet when the pole strength of the magnet is 30 A-m and the pole of the magnet is 2 sq. m. ?
60
30
25
15
Answer: 15
Explanation:
15
